Flushing device for water-closets.



R. STICKDORN.

FLUSHING DEVICE FOR WATER CLOSETS.

- APPLICATION FILED MAY 15, 1914- 1 ,1 89,504, Patented July 4, 1916.

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UNITED STATES PATENT orrron. i

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Specification of Letters Patent.

Patented July 4, 1916.

Application filed May 16, 1914 Serial No. 839,078.

To all whom it may concern:

Be it known that I, ROBERT STIOKDORN, a subject of the Emperor of Germany, and residing at Gartenstadt Meererbusch, near Osterath, Rhine Province, Germany, have invented certain new and useful Improvements in Flushing Devices for Water-Closets, of which the following is a specification.

The present invention refers to a flushing device with air vessel for water closets, in which the inlet valve is opened and placed in connection with the air vessel in known manner by manipulating the operating mechanism, while when the pressure in the air vessel attains a certain value the operating mechanism is automatically actuated by the action of this pressure on a stepped piston in such a manner that when the inlet valve has been closed the air vessel is brought into connection with the flushing pipe. In known devices of this kind the mechanism is operated by hand by pressure on an outwardly projecting part. for the purpose of bringing about connection between the flushing pipe and the air vessel, said part being rigidly connected to the'opcrating member. This has the disadvantage that while water is flowing into the air vessel it can be affected by movement of the operating member in the opposite direction so that the air vessel does not become filled to the predetermined extent but the" outflow of the water takes place earlier. Such "an action on the press button may very naturally be made by a person who is used to the flushing occurring immediately "when the valve is operated.

According to the present invention the handle only carries the operating member which is made in the form of a stepped piston by means of a stop, so that the operating of the handle in the opposite direction can have no effect upon it. In this manner the arbitrary operating from outside is rendered impossible when once action has been brought about by the proper manipulation of the stepped piston, so that the actiontakes place with absolute certainty in the predetermined manner.

In the known devices the further disadvantage is attendant on the arrangement of the operating member which is affected by pressure in that the latter has the tendency t si k unde he i flue ce f n eight can take place. This drawback is removed by the fact that the stepped piston, when in repose, is in its lowest position so that it is kept in repose by its own weight. At the same time the flushing takes place by means of an upward pull.

A further improvement consists therein that the operating mechanism is placed with its axis in a direction which is slanting with regard to the pipe leading to the air pressure vessel. In this manner the water can flow from the air pressure vessel into the flushing pipe which lies in the same line as the stepped piston, without having its direction of flow appreciably diverted and whereby the flushing-action is improved in consequence of the small resistance offered to the flow of the water.

The subject of the invention is shown in the drawing in one form of construction.

Figure 1 is a section through the operating device and a part of the air vessel. Fig. 2 shows the general arrangement.

The casing. a, containing the operating mechanism has a pipe bracket 6 for the inlet valve 0 and for the attachment of the water supply pipe; said casing a is further provided with a pipe bracket at leading to the air vessel 6. The stepped piston 71., i is guided in the casing a, and is rendered water-tight by sleeves f and g, the piston 5 having a larger diameter than the piston h, the piston being of hollow form. The tubular spindle [with a button shaped knob m passes into the'said piston. The spindle is movably led on the one hand through the restricted portion 7a of the stepped piston situated between the two pistons 72, and t and on the other hand through the stuffing box 92. It is expanded at its inner end at Z in such a manner that the said expanded end cannot be drawn through the restricted portion of the stepped piston, so that when the button m is pulled the piston is drawn from the position shown dotted into the position shown in full lines, while on the other hand when the button m is pressed down" the stepped piston does not follow this movement.

Th main a is o he casing conta ning the operating mechanism is arranged obliquely with regard to the pipe bracket at leading to the air vessel 6. Consequently the water can, as can be seen from the drawing, flow from the air vessel into the flushing pipe 7) without having its direction of flow greatly deflected, when the stepped piston is in the position shown dotted. The axis of the pipe 6 containing the inlet valve also lies obliquely with regard to the main axis of the casing a. The valve 0 has a hearing pin 0 by means of which the opening and closing of the inlet valve is brought about by the action of the piston.

The action of the flushing devices is as follows :lVhen at rest the stepped piston h, i is in the position shown dot-ted, so that the casing a and the air vessel 0 are entirely free of water, because the channel formed by the restricted portion 7a of the stepped piston places said air vessel and casing in connection with the flushing pipe 77. If now the stepped piston is brought into the position shown in full lines by pulling the knob m then the valve 0 is lifted from its seat 9 by'the lifting action of the coned surface 2' which lies between the restriction or inlet 7c, and the piston 2', on the pin 0 so that water flows from the pipe which is con nected to the pipe bracket 6 into the air pressure vessel 6. during this time, secured against movement by the lateral pressure of the water and by the friction against the rubbing surfaces, until a certain pressure has been attained in the air pressure vessel and the pressure in the casing a has also risen to such a value that the resistance opposing the movement of the stepped piston is overcome by the excess pressure on the surface of the larger piston i and the stepped piston is led into the position shown dotted. By this movement of the stepped piston the valve 0 is at first pressed on to its seat by the pressure of the water acting on it, so that the pin 0 is pushed forward into the restriction or inset 7c of the stepped piston. Only when the valve 0 is entirely closed, does the cylindrical surface of the piston a leave the corresponding surrounding surface 1 in the casing, so that the water which has collected in the air pressure vessel now flows through the restriction into the flushing pipe 79. The stepped piston then remains again in its position until it is again moved upward by the pull of the knob m.

In consequence of the oblique position of the axis of the inlet valve 0 to the axis of the casing a, the coned surface 9' of the piston 2' engages in a particularly favorable manner against the pin 0 of the valve. It can be seen from the drawing, that the axis of the valve is at right angles to the generatrix of this coned surface, so that the component of the movement directed to the The stepped piston is,

pushing back of the valve coincides exactly with the direction of the axis of the valve.

By adjusting the stufiing-box screw or gland a, the downward movement of the stepped piston h, 2' can be regulated, in order tobe able to adapt the extent of the passage between the lower edge of the surrounding surface 7" and the piston 2' to different water-pressures. At low water-pressure a passage of greater section will be allowed, in order that the water may flow out in a larger stream.

The stuffing-box n is arranged on a separate part 0, which is screwed into the casing a and which simultaneously serves for clamping in the packing sleeve 7'. The part 0 has a hollow space of such a diameter, that between it and the piston 72, a free annular space 8 remains, the piston it being, therefore, guided only at the inner end of the part 0. If the packing sleeve f is not perfectly water-tight, some water escapes into the hollow chamber 8. In order that it shall not escape from here through the stuffing-box n into the open, a hole 6 is provided. in the hollow spindle Z, through which the leakage water can attain the interior of the tube and flow away to the flushing pipe. In this manner any dripping of the leakage water. such as very often occurs in the case of the known devices. is avoided. The interior of the tube Z is, further, connected with the atmosphere by means of openings 41 arranged under the knob m, through which air can be drawn in the event of a suction effect being set up in the casing, for example when the water is drawn off from the house mains, so that any soiling of the water pipes caused by the drawing in of dirty water from the closet is rendered impossible.

As shown in the drawing the air pressure vessel e is formed as an annular vessel something like a life-belt, this form presenting the advantage of possessing great strength, so that the air-vessel can be made of com paratively thin material.

Having now described my invention what I claim as new and desire to secure by Letters Patent is 1. In a flushing device for water-closets the combination of an air vessel, a casing for the operating mechanism, a stepped piston in said casing, said stepped piston being movable into two positions in said casing, an inlet valve in said casing, an inlet water pipe, a flushing pipe, and means to move said piston by hand into one position only whereby the stepped piston is adapted to give free passage from the inlet pipe to the air vessel, said means being slidablv mounted in said stepped piston and being provided with a catch in such a. manner as to permit its carrying on the stepped piston into the vessel filling position, while it can return to its idle position independently of the stepped piston.

2. In a flushing device for water closets, the combination of an air vessel, a casing for the operating mechanism, a stepped piston in said casing having two heads and a restriction between the two heads, an inlet valve in said casing, an inlet water pipe; at flushing pipe, said stepped piston giving free passage from the inlet pipe to the air vessel in one position through its restriction, means to move the piston by hand in said position, the inlet valve engaging with the curved surface between the restriction and one head of the stepped piston for actuating the valve by the movement of the stepped piston.

3. In a flushing device for water-closets, the combination of a casing for the operating mechanism, a stepped piston in said casing, said stepped piston being movable into an elevated and a depressed position, an inlet valve in said casing, an inlet water pipe, a flushing pipe, and means for causing a movement of the stepped piston by hand, said stepped piston being hollow and having two piston ends of unequal diameters and having a restricted or inset portion between said piston ends.

4. In a flushing device for water closets, the combination of an air-vessel, a casing for the operating mechanism, a stepped pis: ton in said casing, an inlet valve in said casing, an inlet water pipe, a flushing pipe, and means to move said stepped piston by hand, the axis of said stepped piston being inclined to that of the pipe leading from the casing to the air vessel and being inclined also to the axis of the inlet valve but being in line with the axis of the flushmg pipe.

5. In a flushing device for water closets, the combination of an air vessel, a casing for the operating mechanism, a stepped piston in said casing having two piston ends of unequal diameter, an inlet valve in said casing, an inlet water pipe, a flushing pipe, and means to move said stepped piston by hand, the larger piston end being adjacent to the flushing pipe and serving to cut oil said flushing pipe from the casing and to open the inlet valve when the stepped piston is moved by hand.

6. In a flushing device for water closets, the combination of an air vessel, a casing for the operating mechanism, a stepped piston in said casing having two piston ends of unequal diameter, an inlet valve in said casing, an inlet water pipe, a flushing pipe, and means to move said stepped piston by hand, said stepped piston having a restricted or inset portion between the piston ends, said restricted or inset portion serving to establish communication between the casing and the flushing pipe and to allow the inlet valve to beclosed by the pressure of the water supply when the stepped piston is automatically returned to its lower position by the excess of pressure bearing on its head of larger diameter.

7. In a flushing device for water closets, an air vessel, an inlet valve, means for actuating the inlet valve by hand to allow of water entering the air vessel, means whereby the air vessel is automatically placed into communication with the flushing pipe when a predetermined pressure is attained in the air vessel, and means whereby the extent of the communicating passage between said air vessel and said flushing pipe may be adjusted to suit the pressure of water available.

8. In a flushing device for water closets, a casing for containing the operating mechanism, means for actuating said operating mechanism, a chamber in said casing for the collection of leakage water and means for conducting said leakage water back into the flushing pipe.

9. In a flushing device for water-closets, in combination, a casing, an air vessel connected thereto, an inlet water pipe and a flushing pipe connected to said casing, a normally closed valve in said casing for controlling the inlet of water thereto, a pis ton in said casing for closing said flushing pipe normally in open position and out of engagement with said valve but movable into position to close said pipe and to 'engage and open said valve, the piston being restored to normal position by the water pressure in said casing when the air in said vessel reaches a predetermined pressure.

10. In a flushing device for water-closets, in combination, a casing, an air vessel connected thereto, an inlet water pipe and a flushing pipe connected to said casing, a normally closed valve in said casing for controlling the inlet of water thereto, a piston in said casing for closing said flushing pipe normally in open position and out of engagement with said valve but manually movable into position to close said pipe and to engage and open said valve, the piston being restored to normal position by the water pressure in said casing when the air in said vessel reaches a predetermined pressure.

11. In a flushing device for water-closets, in combination, a casing, an air vessel connected thereto, an inlet water pipe and a flushing pipe connected to said casing, a normally closed valve in said casing for controlling the inlet of water thereto, a piston in said casing having an enlarged portion for closing said flushing pipe normally in open position and out of engagement with said valve but movable into position to close said pipe and to engage and open said valve, the piston being restored to nor? mal position by the Water pressure in said casing operating upon said enlarged portion when the air in said vessel reaches a predetermined pressure.

12. In a flushing device 'for water-closets,

in combination, a casing, an air vessel conv nected thereto, an inlet water pipe and a flushing pipe connected to said casing, a normally closed valve in said casing for controlling the inlet of water thereto, a piston in said casing for closing said flushing pipe normally in open position and out of engagement with said valve but movable into position to close said pipe and to engage and open said valve, manually movable Copies of this patent may be obtained in:

five cents each, by addressing the "Commissioner of Patents, Washington, D. G. 

